我们最终要实现的效果是将下图的数据填充
maven 坐标
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-base</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-web</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-annotation</artifactId>
<version>3.0.3</version>
</dependency>
实体类
工具类
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import com.runpu.rps.model.Custom;
import com.sun.deploy.net.URLEncoder;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
/**
* execl快速导入导出工具类
*
* */
public class EasyPoiUtil {
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,
boolean isCreateHeader, HttpServletResponse response) throws Exception {
ExportParams exportParams = new ExportParams(title, sheetName);
exportParams.setCreateHeadRows(isCreateHeader);
defaultExport(list, pojoClass, fileName, response, exportParams);
}
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,
HttpServletResponse response) {
defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName));
}
public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response)
throws Exception {
defaultExport(list, fileName, response);
}
private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response,
ExportParams exportParams) {
Workbook workbook = null;
try {
workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
} catch (Exception e) {
e.printStackTrace();
}
if (workbook != null)
try {
downLoadExcel(fileName, response, workbook);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook)
throws Exception {
try {
response.setCharacterEncoding("UTF-8");
response.setHeader("content-Type", "application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
workbook.write(response.getOutputStream());
} catch (IOException e) {
throw new Exception(e.getMessage());
}
}
private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response)
throws Exception {
Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
if (workbook != null)
;
downLoadExcel(fileName, response, workbook);
}
/**
* 从execl文件中导出数据到数据库
* @param filePath execl文件路径
* @param titleRows 标题行
* @param headerRows 表头行
* @param pojoClass 对象
* */
public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass)
throws Exception {
if (org.apache.commons.lang3.StringUtils.isBlank(filePath)) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
List<T> list = null;
try {
list = ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
} catch (NoSuchElementException e) {
throw new Exception("模板不能为空");
} catch (Exception e) {
e.printStackTrace();
throw new Exception(e.getMessage());
}
return list;
}
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass)
throws Exception {
if (file == null) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
List<T> list = null;
try {
list = ExcelImportUtil.importExcel(file.getInputStream(), pojoClass, params);
} catch (NoSuchElementException e) {
throw new Exception("excel文件不能为空");
} catch (Exception e) {
throw new Exception(e.getMessage());
}
return list;
}
//
public static void main(String[] args) {
String filePath = "";
//解析excel,
List<Custom> personList = null;
try {
personList = EasyPoiUtil.importExcel(filePath,1,1,Custom.class);
} catch (Exception e) {
e.printStackTrace();
}
//也可以使用MultipartFile,使用 FileUtil.importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass)导入
System.out.println("导入数据一共【"+personList.size()+"】行");
//TODO 保存数据库
}
}
工具类中有一个测试的方法可以测试下导出,最终导出的效果如下图所示。